Lucy Yang is an elder woman with middle-length tied hair. She has light grey hair and dark eyes. She is short and squat, and has a wrinkly face and saggy cheeks. She is usually seen carrying a smoking pipe on her mouth.
When introduced, she seems to be worried about demons being more active now than in the past.
Exorcist Exam Arc
This character appears talking in the meeting of the True Cross Order in the Vatican City. She mentions that the demons around the world are getting more active all around the world, including upper class demons, which has been making her busy. She wonders what would happen if the gate was fully opened, to which Mephisto answers humans would be able to see demons and that perhaps the world would look like a depiction of hell. She comments that's a horrible thing and asks if the postponement could be extended, but Mephisto says it's impossible and stopping time is a dangerous thing that could destroy the world. After a short conversation between Mephisto and Angel, Lucy agrees with Light, who said they should be devoting their time in healing and adjusting their gears. A while after, the meeting ends.